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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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java.lang.Object
java.io.InputStream
com.tangosol.io.AbstractReadBuffer.AbstractBufferInput
com.tangosol.io.nio.ByteBufferReadBuffer.ByteBufferInput
public final class ByteBufferReadBuffer.ByteBufferInput
This is a simple implementation of the BufferInput interface on top of a ByteBuffer.
Field Summary | |
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protected java.nio.ByteBuffer |
m_buf The ByteBuffer object from which data is read. |
Constructor Summary | |
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ByteBufferReadBuffer.ByteBufferInput(java.nio.ByteBuffer buf) Default constructor. |
Method Summary | |
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protected void |
adjustOffsetInternal(int cb) Adjust the internal stream offset. |
int |
available() Returns the number of bytes that can be read (or skipped over) from this input stream without causing a blocking I/O condition to occur. |
protected java.lang.String |
convertUTF(int of, int cb) Convert a UTF-8 encoded section of the binary stream into a String. |
java.nio.ByteBuffer |
getByteBuffer() Obtain the NIO ByteBuffer that this BufferInput is based on. |
int |
getOffset() Determine the current offset of this BufferInput within the underlying ReadBuffer. |
void |
mark(int cbReadLimit) Marks the current read position in the InputStream in order to support the stream to be later "rewound" (using the InputStreaming.reset() method) to the current position. |
int |
read() Read the next byte of data from the InputStream. |
int |
read(byte[] abDest, int ofDest, int cbDest) Read up to cb bytes from the input stream and store them into the passed array ab starting at offset of . |
byte |
readByte() Read a byte value. |
char |
readChar() Read a char value. |
double |
readDouble() Read a double value. |
float |
readFloat() Read a float value. |
int |
readInt() Read an int value. |
long |
readLong() Read a long value. |
short |
readShort() Read a short value. |
int |
readUnsignedShort() Read an unsigned short value. |
void |
reset() Rewind this stream to the position at the time the InputStreaming.mark(int) method was last called on this InputStream. |
void |
setOffsetInternal(int of) Update the internal stream offset. |
int |
skipBytes(int cb) Skips over up to the specified number of bytes of data. |
Methods inherited from class com.tangosol.io.AbstractReadBuffer.AbstractBufferInput |
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close, getBuffer, getCharBuf, getMarkInternal, markSupported, read, readBoolean, readBuffer, readFully, readFully, readLine, readPackedInt, readPackedLong, readSafeUTF, readUnsignedByte, readUTF, readUTF, setMarkInternal, setOffset, skip |
Methods inherited from interface com.tangosol.io.ReadBuffer.BufferInput |
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close, getBuffer, markSupported, readBoolean, readBuffer, readFully, readFully, readLine, readPackedInt, readPackedLong, readSafeUTF, readUnsignedByte, readUTF, setOffset |
Methods inherited from interface com.tangosol.io.InputStreaming |
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read, skip |
Field Detail |
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protected java.nio.ByteBuffer m_buf
Constructor Detail |
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public ByteBufferReadBuffer.ByteBufferInput(java.nio.ByteBuffer buf)
buf
- the NIO ByteBuffer that this BufferInput is backed byMethod Detail |
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public java.nio.ByteBuffer getByteBuffer()
public int read() throws java.io.IOException
int
in the range 0
to 255
. If the end of the stream has been reached, the value -1
is returned.
This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.
read
in interface InputStreaming
read
in class AbstractReadBuffer.AbstractBufferInput
-1
if the end of the stream has been reachedjava.io.IOException
- if an I/O error occurspublic int read(byte[] abDest, int ofDest, int cbDest) throws java.io.IOException
cb
bytes from the input stream and store them into the passed array ab
starting at offset of
. The number of bytes actually read is returned.
This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.
read
in interface InputStreaming
read
in class AbstractReadBuffer.AbstractBufferInput
abDest
- the array to store the bytes which are read from the streamofDest
- the offset into the array that the read bytes will be storedcbDest
- the maximum number of bytes to read-1
if no bytes were read from the stream because the end of the stream had been reachedjava.io.IOException
- if an I/O error occurspublic void mark(int cbReadLimit)
InputStreaming.reset()
method) to the current position. The caller passes in the maximum number of bytes that it expects to read before calling the InputStreaming.reset()
method, thus indicating the upper bounds of the responsibility of the stream to be able to buffer what it has read in order to support this functionality.
BufferInput implementations ignore the cbReadLimit
; they must support an unlimited read limit, since they appear to the user as an input stream on top of a fully realized read buffer.
mark
in interface InputStreaming
mark
in interface ReadBuffer.BufferInput
mark
in class AbstractReadBuffer.AbstractBufferInput
cbReadLimit
- the maximum number of bytes that caller expects the InputStream to be able to read before the mark position becomes invalidpublic void reset() throws java.io.IOException
InputStreaming.mark(int)
method was last called on this InputStream. If the InputStream cannot fulfill this contract, it should throw an IOException.reset
in interface InputStreaming
reset
in class AbstractReadBuffer.AbstractBufferInput
java.io.IOException
- if an I/O error occurs, for example if this has not been marked or if the mark has been invalidatedpublic int available() throws java.io.IOException
BufferInput implementations must implement this method to return the extent of the buffer that has not yet been read; in other words, the entire un-read portion of the buffer must be available.
available
in interface InputStreaming
available
in interface ReadBuffer.BufferInput
available
in class AbstractReadBuffer.AbstractBufferInput
java.io.IOException
- if an I/O error occurspublic int skipBytes(int cb) throws java.io.IOException
skipBytes
in interface ReadBuffer.BufferInput
skipBytes
in interface java.io.DataInput
skipBytes
in class AbstractReadBuffer.AbstractBufferInput
cb
- the maximum number of bytes to skip overjava.io.IOException
- if an I/O error occurspublic byte readByte() throws java.io.IOException
This method is the counterpart for the DataOutput.writeByte(int)
method.
readByte
in interface ReadBuffer.BufferInput
readByte
in interface java.io.DataInput
readByte
in class AbstractReadBuffer.AbstractBufferInput
byte
valuejava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic short readShort() throws java.io.IOException
This method is the counterpart for the DataOutput.writeShort(int)
method.
readShort
in interface ReadBuffer.BufferInput
readShort
in interface java.io.DataInput
readShort
in class AbstractReadBuffer.AbstractBufferInput
short
valuejava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic int readUnsignedShort() throws java.io.IOException
This method is the counterpart for the DataOutput.writeShort(int)
method when it is used with unsigned 16-bit values.
readUnsignedShort
in interface ReadBuffer.BufferInput
readUnsignedShort
in interface java.io.DataInput
readUnsignedShort
in class AbstractReadBuffer.AbstractBufferInput
int
value in the range of 0x0000 to 0xFFFFjava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic char readChar() throws java.io.IOException
This method is the counterpart for the DataOutput.writeChar(int)
method.
readChar
in interface ReadBuffer.BufferInput
readChar
in interface java.io.DataInput
readChar
in class AbstractReadBuffer.AbstractBufferInput
char
valuejava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic int readInt() throws java.io.IOException
This method is the counterpart for the DataOutput.writeInt(int)
method.
readInt
in interface ReadBuffer.BufferInput
readInt
in interface java.io.DataInput
readInt
in class AbstractReadBuffer.AbstractBufferInput
int
valuejava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic long readLong() throws java.io.IOException
This method is the counterpart for the DataOutput.writeLong(long)
method.
readLong
in interface ReadBuffer.BufferInput
readLong
in interface java.io.DataInput
readLong
in class AbstractReadBuffer.AbstractBufferInput
long
valuejava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic float readFloat() throws java.io.IOException
This method is the counterpart for the DataOutput.writeFloat(float)
method.
readFloat
in interface ReadBuffer.BufferInput
readFloat
in interface java.io.DataInput
readFloat
in class AbstractReadBuffer.AbstractBufferInput
float
valuejava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic double readDouble() throws java.io.IOException
This method is the counterpart for the DataOutput.writeDouble(double)
method.
readDouble
in interface ReadBuffer.BufferInput
readDouble
in interface java.io.DataInput
readDouble
in class AbstractReadBuffer.AbstractBufferInput
double
valuejava.io.EOFException
- if the value could not be read because no more data remains to be readjava.io.IOException
- if an I/O error occurspublic int getOffset()
getOffset
in interface ReadBuffer.BufferInput
getOffset
in class AbstractReadBuffer.AbstractBufferInput
public void setOffsetInternal(int of)
setOffsetInternal
in class AbstractReadBuffer.AbstractBufferInput
of
- the new offsetprotected void adjustOffsetInternal(int cb)
adjustOffsetInternal
in class AbstractReadBuffer.AbstractBufferInput
cb
- the number of bytes that were writtenprotected java.lang.String convertUTF(int of, int cb) throws java.io.IOException
convertUTF
in class AbstractReadBuffer.AbstractBufferInput
of
- the offset within the streamcb
- the length in bytes within the streamjava.io.IOException
- if an I/O or conversion exception occurs, such as UTFDataFormatException
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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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